Inking apparatus for printing-machines



`IlTKINGr APPARATUS FOR PRINTING MACHINE-S.

No. 372,214.V v y122122111221 061;. 25, 1887.

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G..P.PBNNBP.. INKING APPARATUS POR PRINTING MACHINES.

-No. 372,214. Patented Oct. 25, 1887. 'Twig MMM? I Cuovgm Y www?. I Y By@MM/ I f5 Ai Afro/mers NITED STATES PATENT EErcE.

GEORGE FENNER, OF NEW LONDON, CONNECTICUT.

INKlNG APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 372,214, dated. October25, 1887.

Application filed May 27, 1886. Serial No. 203,447. (No model.) n

T 0 ZZ whom t may concern:

Be it known that l, GEORGE P. FENNER, a citizen of the United States,residing at New London, in the county of New London and State ofConnecticut, have invented new and useful Improvements in lnkingApparatus for Printing-Machines, of which the following is aspecification.

This invention relates to printingpresses, and has for its object toprovide novel means for increasing the efficiency of such apparatus.

To such end the invention consists in the features of construction andcombination of devices hereinafter described and claimed, referencebeing made to the accompanying drawings, in which- Figure l represents aside elevation ofa portion of a printing-press embodying my improvement.Fig. 2 is a transverse section in the plane ac x, Fig. 1. Fig. 3 is adetail view, on a larger scale than the preceding figures, ot' thegear-wheels for rotating the receiving, transmitting, anddistributing-rolls, and illustrates their construction.

Similarletters indicate corresponding parts.

In the drawings, the letter A designates the im pression-cylinder ofa printing-press of wellknown construction, and B is the reciprocatingtype-bed which carries the form. Standards C C, secured to the mainframe of the press, support the ink-formt D,and also afford bearings forthe several rolls.

E E are form-rolls, which are properly situated to come into contactwith the type as the bed reciprocates.

F is the fount-roll, and F is the duct-roll, which is oscillated, bymeans hereinafter described, to come alternatelyin contact with theforint-roll F and a receiving-rolhC. A distributing-roll, H, is incontact with the form-rolls E E, and the ink is transmitted to the samefrom the receiving-roll G by an intermediate roll, l, which is incontact with both the said rolls.

The rolls E, F, G, II, and I are mounted, respectively, on shafts e, f,g, h, and i, having bearings in the standards C C, and the receivl tionof their lengths by means tol be presently described.

The main object of my invention is to uniformly distribute the ink onthe` rolls, and consequently to the type, which object I accomplish bygearing together the receiving, transmitting, and distributing rolls insuch a manner that the superficial velocity of their contact-peripheriesis different, thusA producing a drag of the surfaces. In other words, ifthe superficial velocity of the distributing-roll H is taken as a unit,that of the transmitting-roll is greater or less, and the velocity ofthe receiving-roll is greater or less than that of thetransmitting-roll. With this variation in the superficial velocity ofthe contact-surfaces of the several rolls G H I it is Well to constructthe same of iron, steel, or other hard metal which is smoothly turned,since composition or felt rolls are liable to be destroyed by theresulting friction between the surfacesin Contact. This variation ofvelocity between the rolls can be produced by employing gears ofdifferent diameter and number 0f teeth.

In the exampleshown in the drawings the three rolls are geared togetherby cog-wheels G' H I', the cog-wheels G and H being each provided withtwenty teeth, while the cogwheel I has nineteen teeth. As the diametersof the rollsare alike, the superficial velocity of the distributing-rollH will be in a measure less than that of the transmitting-roll I, andlikewise the superficial velocity of the receiving-roll G will be lessthan that of the transmitting-roll.

Motion is imparted to the gear H by a gearwheel, L, which meshes intothe same and is engaged by a rack, L', secured to the reciproeatingtype-bed, whereby a reciprocating rotary movement of the rolls isobtained. The vibrating motion of the rolls G and H, previously spokenabout, is imparted thereto as is pivotcd at m to a support secured toone of the standards, so that as the roll H is thrown in one directionthe roll G is thrown in the opposite, and vice versa, whereby thedistribution of ink is greatly improved. To oscillate the duct-roll F soas to bring it alternately in contact with the receiving-roll and thefount-roll, it is provided with bearings in two levers, N, (one on eachside of the machinc,) which are mounted each on a shaft, a, thatoperates in the standards D, and to which an oscillating motion isimparted by a cam, a', Fig. 1, on the type-bed, or by any.

other means such as are usually employed for this purpose.

In printingmaehines where the various rolls are rotated by frictionalcontact and thereby moved with the same supcriicial velocity, the inl;is not distributed between the individual rolls with such equality aswhen the rotating surfaces act with a continual drag upon eachother-that is to say, when there is a difference between the superficialvelocity of such surfaceswthe distinction being this, that when therolls rotate with the same superficial velocity the material of the sameis merely pressed together as the elements of contact of the twoperipheries move at the same speed; but when there is a difference inthis respect the elements of contact move past each other toproduceamovi ng orfrictional contact of the surfaces, one on the other, wherebythe ink is more thoroughly distributed. The vibration of the receivingand distributing rolls, in combination with the rolls geared together,as described, produces al1-increased result in regard to theeffectiveness of the apparatus.

It is obvious that the transmitting-roll I can be omitted and thereceiving-roll G brought directly in contact with the distributing-rollH; but a more efficient distribution is obtained by the use of anintermediate roll.

\Vhat Iclaim as new, and desire to secure by Letters Patent, is-

l. In an inking apparatus for printingpresses, the combination ofthe-ink-fount, the form-rolls, a roll, I, rolls for supplying ink to thesame, and a distributing-roll, H, in contact with the roll I and theform-rolls E E, the said roll I and the distributing-roll havingdifferent superiieial velocities, substantially as described.

2. In au inking apparatus for printingpresses, the combination, with theink-fount, the fouet-roll, the oscillating duet-roll, and theform-rolls, of the receiving-roll G,'the distributing-roll H, in Contactwith the formrolls, the transmitting-roll I, in contact with thereceiving and distributing rolls, the said receiving, transmitting, anddistributing rolls having a different superficial velocity from theirrespective contact-rolls, and means, as described, foi-imparting analternating reciprocating motion to the rolls G and H, substantially asand for the purpose set forth.A

The combination, with an ink-forint, a fount-roll, a duet-roll, andform-rolls, of a distributing-roll, H, in contact with the latter, areceiving-roll, G, and a transmitting-roll, I, in contact with thereceiving-roll and the distributing-roll, the said transmittingroll Ihaving a superficial velocity different from the superiicial velocitiesof the receiving and distributing rolls G H, substantially as described.

In testimony whereofIhavehereuntoset my hand and seal in the presence 0ftwo subscribing witnesses.

GEORGE J?. FENNER. s]

Vitnesses:

EDWARD T. BROWN, GEORGE CoLFAX.

